Trolley-head.



v N0.'7'77,691. I PATENTED DEC. 20, 1904.

E. V. NEWGOMB.

TROLLEY HEAD.

APPLICATION FILED I)E(I1.15 1903.

N0 MODEL.

E $0172 K/MCJUCOM, I a

apical.

NITED STATES Patented December 20, 1904.

PATENT OFFICE.

TROLLEY-HEAD.

SPECIFICATION forming part of Letters Patent No. 777,691, dated December 20, 1904. Application file December 15, 1903. Serial No. 185,299.

T0 N1 toll/077i, it TIMI/Z] concern:

Be it known that I, EDWINV. NEWGOMB, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented a new and useful Trolley-Head, of which the following is a specification.

This invention relates to overhead trolleys; and one of the objects thereof is to provide a harp having means of securing a detachable wheel capable of being replaced by a new one as occasion may arise.

Another object is to provide means for permitting the easy removal of the wheel without disturbing the remaining cooperating parts.

A further object of the invention is to provide means for conveniently taking up the wear of the trolley-wheels.

Further objects and advantages of the invention will be referred to in the following description, it being understood that changes in form, proportion, and minor details of construction may be resorted to without depart ing from the spirit or sacrificing any of the advantages of the invention.

In the drawings, Figure 1 is a detail pen spective view of one of the trollcy-harp sections. Fig. 2 is a transverse sectional view through the trolley-harp, showing the wheel in elevation; and Fig. 3 is a fragmentary top plan View of the harp and wheel.

The trolley-harp is illustrated as consisting of two coinciding sections 1 and 2. Each of the sections consists of a semitubular shank 3, with an offset head-section 4, with a depression or recess 5, having parallel walls 6 and 6' to guide the sliding block 7 therein. These blocks are movable by adjusting-screws 8, projecting from the bottom through the floor of the recess, so that the blocks will be slidable in a substantially vertical plane. The rear wall 6 of the recesses is slotted, as at 9, which slot is of about the same length as the diameter of journals 10 and 11 on the wheel 12, which rest upon the concave seats 7 of blocks 7 This sliding block serves a dual purposenamely, as acting in the capacity of a lock to secure the trolley-wheel against slipping through the slots and as bearings to receive the side thrust of the wheel.

The journals can be kept suitably lubricated by means of a lubricant in the oil-cups 13. having communication with the recesses 5.

It will here be explained that the relation between the oil cup or socket 13 and the slidable bearing-block 7 is a very important feature of the present invention, for the reason that by the adjustment of the bearing-block the adjacent journal of the blOllQY-Wllfifil may be maintained in intimate relation with the dischargopassage 13 of the oil-cup to insure an effective lubrication of the journal. .Hence the slidable bearingblock has two functions viz. to prevent accidental displacement oi the journal through the entrance-slot5 and to maintain the journal in intimate relation with the lubricator. The outer open end of the oil cup or socket 13 is normally closed by a movable closure-plug 13".

At the ends of the seniitubular shanks of the harp are abutments 1%, through which rivets may pass to fasten the two sections together. Depending cars 16 and 17 are also carried by the edges of the respective sections, so that fastening devices may be passed through them to additionally reinforce the harp, while the internally-threaded bosses 18 are to receive fastening devices to secure the harp to a pole when the parts are properly assembled. The harp will comprise a tubular shank, having means of attachment to apole, and a bifurcated head, between which the wheel will be removably journaled, so that it may be removed and replaced in a quick and eflicient manner. If after considerable use the blocks become worn, they can be replaced with but little time and expense. Another advantage is that inasmuch as it is necessary to provide diii'erent forms of wheels for ice covered wires they can be substituted one for the other by simply sliding the blocks toward the floors of the recesses, when the wheel already seated can be removed.

. That I claim, and desire to secure by Letters Patent, is-

1. A trolley-harp having recessed terminals with slotted walls, bearing-blocks in said recessed terminals and slidable across the slots, and a trolley-wheel carried by the blocks.

2. A trolley-harp having recessed terminals With openings in the Walls thereof, a trolleywheel journaled in the recessed terminals and having journals movable through the openings and adjustable bearing-blocks for the journals and adjustable in the terminals to prevent movement of the journals through the openings.

3. A trolley-harp having bearing-recesses provided With entrance slots, and bearingblocks in the recesses and slidable across the entrance-slots.

4. A trolley-harp having bearing-recesses provided With entrance-slots, bearing-blocks Within the recesses and capable of adjustment therein across the slots, and eXteriorly-accessible means piercing the recessed portions of the harp for the adjustment of the bearingblocks.

5. A trolley-harp having bearing-recesses which are provided at corresponding ends with entrance-slots, and bearing-blocks Within the other corresponding ends of the recesses and capable of adjustment therein across the entrance-slots.

6. A trolley-harp having a bearing-recess, a lubricator having its discharge in communication With one end of the recess, and a bearing-block slidable Within the opposite end of the recess.

7. A trolley-harp having a bearing-recess, a lubricator having its discharge in communication With one end of the recess, a bearingblock located Within the opposite end of the recess and slidable toward'and away from the discharge of the lubricator, and means to adjustably slide the block in the recess.

8. A trolley-harp having a bearing-recess and provided with a socket formed in the outer face of one end Wall of the recess and in communication With the interior of said recess, a removable closure for the outer end of the socket, a bearing-block slidable Within the opposite end of the recess, and means for adjustably sliding the block toward and away from the socket.

9. A trolley-harp having a bearing-recess and a lubricant-containing socket in communication With one end of the recess, a removable closure for the socket, a bearing-block slidable Within the opposite end of the recess, and an adjusting-screw piercing said opposite end of the recess and engaging the block for adjusting the same.

10. A trolley-harp having a bearing-recess and provided With an entrance-slot and a lubricant-containing socket in communication with one end of the recess, a removable closure for the socket, and a bearing-block Within the opposite end of the recess and slidable therein across the entrance-slot.

11. A trolley-harp having a bearing-recess in the inner face of one of the members thereof, a bearing-block adjustable Within one end of the recess and capable of being removed through the open side of the recess, and a trolley-Wheel having a journal fitted Within the recess and engaging the bearing-block, said Wheel overlapping the bearing-block and constituting means to prevent displacement thereof.

12. A trolley-harp having a bearing-recess in the inner face of one of its members and provided With an entrance-slot leading into the recess, a bearing-block adjustable Within one end of the recess and movable across the slot and capable of being removed through the open side of the recess, and a trolley- Wheel having a journal capable of being entered and removed through the entrance-slot and normally seated Within the recess and engaging the block, said trolley-Wheel overlapping the block and constituting means to prevent displacement thereof.

13. A trolley-harp having a bearing-recess in the inner face of one of its members and provided With an entrance-slot leading to the recess, a bearing-block slidable Within one end of the recess and movable across the entrance-slot and also capable of being removed through the open side of the recess, an adjusting-screw piercing one end of the recess and engaging the bearing-block to adjust the same, and a trolley-Wheel having a journal capable of being entered. and removed through the entrance-slot and normally seated Within the recess and engaging the block, said trolley-Wheel overlapping the block and constituting means to prevent displacement thereof.

In testimony that I claim the foregoing as my oWn I have hereto afliXed my signature in the presence of tWo Witnesses.

EDWIN V. NEWVGOMB.

WVitnesses':

E. B. NEWCOMB, JAMES J. MoUNTJoY. 

